Staging: oslec bug fix

I have just had a bug fix submitted for Oslec which I have applied to
Oslec SVN. The bug can potentially stops the echo canceller adapting
after a few seconds, although it hasn't caused many problems in
practice.

Signed-off-by: David Rowe <david@rowetel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/staging/echo/echo.c b/drivers/staging/echo/echo.c
index 6d7217e1bd06..79d15c65bfe4 100644
--- a/drivers/staging/echo/echo.c
+++ b/drivers/staging/echo/echo.c
@@ -395,7 +395,7 @@ int16_t oslec_update(struct oslec_state *ec, int16_t tx, int16_t rx)
                 old = (int)ec->fir_state.history[ec->fir_state.curr_pos] *
                     (int)ec->fir_state.history[ec->fir_state.curr_pos];
                 ec->Pstates +=
-                    ((new - old) + (1 << ec->log2taps)) >> ec->log2taps;
+                    ((new - old) + (1 << (ec->log2taps-1))) >> ec->log2taps;
                 if (ec->Pstates < 0)
                         ec->Pstates = 0;
         }